Question

Q13 If a rectangular sheet of size 22cm by 16cm is wrapped to form a cylinder of height 16cm . Find the CSA of the cylinder (in sqm).​

Answer 1

Step-by-step explanation:

Csa of cylinder is nothing but area of that rectangle sheet

so = 22*16=352

or height of cylinder = breadth of the rectangle =16cm

circumference = length of the rectangle

2*pi*r= 22

2*22/7 *r=22

r= 7/2

so csa = 2*pi*r*h = 2*22/7 *7/2*16=22*16=352